Using Spamassassin with Rails ActionMailer | November 25, 2006-->
November 25, 2006
Running attachr.com for quite a while i noticed that the email service (you can send an email to save@attachr.com to save a code snippet) became target for spam mails.
I decided to install spamassassin to mark incoming emails for the ActionMailer service that inserts email entries into the attachr.com database.
Running a decent Debian webserver the whole task took only about 10 minutes.
First, install spamassassinattachr:~# apt-get install spamassassin
You need to enable spamassassing in /etc/default/spamassassin.
attachr:~# vim /etc/default/spamassassin # /etc/default/spamassassin # Duncan Findlay # WARNING: please read README.spamd before using. # There may be security risks. # Change to one to enable spamd ENABLED=1 # ^^^^^set ENABLED to 1
Start the Spamassassin Daemon:
attachr:~# /etc/init.d/spamassassin start
To filter every incoming email with spammassasin the alias file (/etc/postfix/attachr looks like this:
cat /etc/postfix/attachr save: "|/usr/bin/spamc|/path/to/app/script/runner 'EntryMailer.receive(STDIN.read)'"
Spamassassin marks every email with additional mail header fields (X-Spam-...). Email marked as Spam has a X-Spam-Status header field like this:
X-Spam-Status: Yes, score=7.0 required=5.0 tests=FORGED_MUA_OUTLOOK,The Ruby code handling inbound mails has an "email" object containing the incoming email. The "x-spam-status" field contains the header value. Just match a /^Yes/ to flag the incoming mail as spam (attachr.com just ignores entries flagged as spam).
spam = true if email["x-spam-status"].to_s =~ /^Yes/
